1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
|
use na::Point2;
use rapier2d::dynamics::{JointSet, RigidBodyBuilder, RigidBodySet};
use rapier2d::geometry::{ColliderBuilder, ColliderSet};
use rapier_testbed2d::Testbed;
pub fn init_world(testbed: &mut Testbed) {
/*
* World
*/
let mut bodies = RigidBodySet::new();
let mut colliders = ColliderSet::new();
let joints = JointSet::new();
/*
* Ground
*/
let ground_size = 20.;
let ground_height = 1.0;
let rigid_body = RigidBodyBuilder::new_static()
.translation(0.0, -ground_height)
.build();
let handle = bodies.insert(rigid_body);
let collider = ColliderBuilder::cuboid(ground_size, ground_height)
.restitution(1.0)
.build();
colliders.insert(collider, handle, &mut bodies);
let num = 10;
let rad = 0.5;
for j in 0..2 {
for i in 0..=num {
let x = (i as f32) - num as f32 / 2.0;
let rigid_body = RigidBodyBuilder::new_dynamic()
.translation(x * 2.0, 10.0 * (j as f32 + 1.0))
.build();
let handle = bodies.insert(rigid_body);
let collider = ColliderBuilder::ball(rad)
.restitution((i as f32) / (num as f32))
.build();
colliders.insert(collider, handle, &mut bodies);
}
}
/*
* Set up the testbed.
*/
testbed.set_world(bodies, colliders, joints);
testbed.look_at(Point2::new(0.0, 1.0), 25.0);
}
fn main() {
let testbed = Testbed::from_builders(0, vec![("Boxes", init_world)]);
testbed.run()
}
|
